When it comes to towing a trailer with your 2020 Chevy Colorado, having the proper wiring is essential. The wiring allows for your trailer’s lights, brake system, and other electrical components to function properly while on the road. In this guide, we will provide a comprehensive overview of the 2020 Chevy Colorado trailer wiring diagram, including installation instructions, frequently asked questions, and more.
What You Need to Know About 2020 Chevy Colorado Trailer Wiring Diagram
The 2020 Chevy Colorado comes with multiple options for trailer wiring, including the seven-pin and four-pin connectors. The seven-pin connector is typically used for larger trailers that require brakes and other electrical systems, while the four-pin connector is suitable for smaller trailers that only require basic lighting. We will discuss both options in detail below.
Seven-Pin Connector
The seven-pin connector is the most common wiring option for larger trailers that require a brake system and other electrical components, such as reverse lights and turn signals. To install the seven-pin connector, follow these steps:
| Materials: | Tools: |
| – Pre-made seven-pin connector | – Wire cutters/strippers |
| – Butt connectors | – Crimping tool |
| – Electrical tape | – 10mm socket |
| – Zip ties | – Ratchet wrench |
1. Locate the wiring harness under the rear bumper of your Chevy Colorado.
2. Remove the plastic cover to access the harness.
3. Use wire cutters to strip approximately ½ inch of insulation from each wire in the harness.
4. Connect the corresponding wires from the seven-pin connector to the wires in the harness using butt connectors and a crimping tool. Refer to the diagram below for the appropriate connections:
| Wire Color | Function | Connector Pin |
| Yellow | Left turn signal | 1 |
| White | Ground | 2 |
| Green | Right turn signal | 3 |
| Brown | Taillights | 4 |
| Blue | Brake controller | 5 |
| Red | 12V power | 6 |
| Black | Backup lights | 7 |
5. After connecting the wires, wrap them with electrical tape to protect them from the elements.
6. Use zip ties to secure any loose wiring and re-install the plastic cover.
Four-Pin Connector
The four-pin connector is a simpler, more streamlined option for smaller trailers that only require basic lighting. To install the four-pin connector, follow these steps:
| Materials: | Tools: |
| – Pre-made four-pin connector | – Wire cutters/strippers |
| – Butt connectors | – Crimping tool |
| – Electrical tape | – 10mm socket |
| – Zip ties | – Ratchet wrench |
1. Locate the wiring harness under the rear bumper of your Chevy Colorado.
2. Remove the plastic cover to access the harness.
3. Use wire cutters to strip approximately ½ inch of insulation from each wire in the harness.
4. Connect the corresponding wires from the four-pin connector to the wires in the harness using butt connectors and a crimping tool. Refer to the diagram below for the appropriate connections:
| Wire Color | Function | Connector Pin |
| White | Ground | 1 |
| Brown | Taillights | 2 |
| Yellow | Left turn/brake | 3 |
| Green | Right turn/brake | 4 |
5. After connecting the wires, wrap them with electrical tape to protect them from the elements.
6. Use zip ties to secure any loose wiring and re-install the plastic cover.
FAQs
Q: Do I need to install trailer wiring for my 2020 Chevy Colorado?
A: If you plan on towing a trailer that requires electrical components, such as brakes or lighting, then yes, you will need to install trailer wiring. Consult your owner’s manual for more information on your specific Chevy Colorado model’s towing capacity.
Q: Can I install trailer wiring myself?
A: Yes, you can install trailer wiring yourself. However, if you are not comfortable with electrical work or do not have the necessary tools, it is recommended that you have a professional install the wiring for you.
Q: What if my trailer requires a different type of connector?
A: If your trailer requires a different type of connector, you may need to purchase an adapter to ensure that your trailer’s electrical components function properly with your Chevy Colorado’s wiring. Consult a professional for the right adapter for your trailer and vehicle.
Q: Are there any safety precautions I should take when installing trailer wiring?
A: Yes, when installing trailer wiring, be sure to disconnect your vehicle’s battery to prevent electrical shock or damage to your vehicle’s electrical system. Additionally, make sure that all wiring is secure and free from any sharp edges that may cause damage to the wiring or your vehicle.
Q: How do I know if my trailer wiring is functioning properly?
A: After installing your trailer wiring, connect your trailer to your Chevy Colorado and test all of the electrical components, including the brakes, turn signals, and taillights. If any components are not functioning properly, consult a professional for repairs.
In conclusion, having proper trailer wiring is essential for safe and efficient towing with your 2020 Chevy Colorado. By following the installation instructions and FAQs outlined in this guide, you should be able to install your trailer wiring with ease and confidence. If you have any further questions or concerns, consult a professional for assistance.
